Creating a WebSocket server

For this task, we will use the non-core websocket module to create a pure WebSocket server that will receive and respond to WebSocket requests from the browser.

Getting ready

We'll create a new folder for our project which will hold two files: server.js and client.html. server.js. They provide the server-side websocket functionality and serve up the client.html file. For the server-side WebSocket functionality, we also need to install the websocket module:

npm install websocket

Note

For more information on the websocket module, see https://www.github.com/Worlize/WebSocket-Node.

How to do it...

A WebSocket is an HTTP upgrade. As such, WebSocket servers run on top of HTTP servers. So we'll require the http and websocket servers, plus we'll also load our client.html file (which we'll be creating soon) and the url module:

var http = require('http');
var WSServer = require('websocket').server;
var url = require('url');
var clientHtml = require('fs').readFileSync('client...